Heucherella plant named &#39;Honey Rose&#39;

ABSTRACT

A new and distinct  Heucherella  plant substantially as shown and described, characterized by palmatifid leaves with prominent sinuses, spring leaves of orange amber with a strong white veil, summer leaves rose amber with a strong white veil, small white flowers on short maroon flower stalks, a medium plant size with multiple crowns, and excellent vigor.

BOTANICAL DENOMINATION

Heucherella hybrid

VARIETY DESIGNATION

‘Honey Rose’

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Heucherella and given the cultivar name of ‘Honey Rose’. Heucherella is in the family Saxifragaceae. Heucherella ‘Honey Rose’ originated from a controlled cross between Heuchera K573-10 (a proprietary unreleased Heuchera hybrid), as the seed parent, and Tiarella mass pollen from proprietary unreleased Tiarella seedlings.

Compared to the seed parent, Heuchera K573-10 (unpatented), the new cultivar has leaves that are more lobed and peach to rose colored rather than tan to yellow green.

Compared to the pollen parent, Tiarella unknown (unpatented), the new cultivar has peach to rose colored leaves rather than green.

Compared to Heucherella ‘Buttered Rum’ (U.S. Plant patent application Ser. No. 13/507,935), the new cultivar has strongly veiled leaves and a rounder habit.

This new Heucherella is distinguished by:

1. palmatifid leaves with prominent sinuses,

2. spring leaves of orange amber with a strong white veil,

3. summer leaves rose amber with a strong white veil,

4. small white flowers on short maroon flower stalks,

5. medium plant size with multiple crowns, and

6. excellent vigor.

This new cultivar has been reproduced only by asexual propagation (division and tissue culture). Each of the progeny exhibits identical characteristics to the original plant. Asexual propagation by division and tissue culture using standard micropropagation techniques with terminal and lateral shoots, as done in Canby, Oreg., shows that the foregoing characteristics and distinctions come true to form and are established and transmitted through succeeding propagations. The present invention has not been evaluated under all possible environmental conditions. The phenotype may vary with variations in environment without a change in the genotype of the plant.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a six-month-old Heucherella ‘Honey Rose’ growing in a one gallon container in a cool greenhouse in early May Canby, Oreg.

FIG. 2 shows three, 10 month-old Heucherella ‘Honey Rose’ in bloom, in the ground, in a trial bed in the shade in October in Canby, Oreg.

FIG. 3 shows the spring coloration on plants grown in 4 inch containers in the greenhouse in early May in Canby, Oreg.

DETAILED PLANT DESCRIPTION

The following is a detailed description of the new Heucherella cultivar based on observations of 10 month-old specimens growing in the ground outside in a shaded trial bed in Canby, Oreg. Canby is Zone 8 on the USDA Hardiness map. Temperatures range from a high of 95° F. in August to an average of 32° F. in January. Normal rainfall in Canby is 42.8 inches per year. The color descriptions are all based on The Royal Horticultural Society Colour Chart, fifth edition.

-   Plant:     -   -   Form.—basal rosette, herbaceous perennial.         -   Hardiness.—USDA Zone 4 to 9.         -   Size.—20 cm tall from top of the foliage to the ground and             42 cm wide.         -   Habit.—mounding.         -   Vigor.—excellent.         -   Roots.—fibrous, freely branching, fine, and white in color.             Roots develop easily from cuttings. -   Leaf:     -   -   Type.—simple.         -   Arrangement.—rosette.         -   Shape.—ovate.         -   Lobing/division.—5 to 7 lobes palmately parted with the             terminal the longest and most deeply parted, each with             distinctly cut secondary lobes (the depth of the lobes             varies with plant maturity and leaf age; leaves become more             deeply lobed with maturity).         -   Venation.—palmate, veins both sides Greyed Red 182C.         -   Margins.—broadly crenate.         -   Apex.—mucronulate.         -   Base.—cordate, lobes usually overlapping.         -   Blade size.—grows to 13 cm long and 11 cm wide, usually             smaller.         -   Surface texture.—glandular both surfaces.         -   Petiole description.—grows to 18 cm long and 2 mm wide,             glandular hairs, closest to Grey Brown N199B.         -   Leaf color.—variable depending on temperature; spring,             topside, Greyed Orange N174C with veins Greyed Orange 178B,             bottom side closest to Greyed Purple 184A; summer topside             closest to Greyed Purple 182B with the veil closest to             N155A, bottom side closest to Greyed Purple 187C; fall             Greyed Purple 183D with the veil closest to N155A, bottom             side closest to Greyed Purple 187B; winter closest to Brown             200C with the veil Black 202C, bottom side closest to 182B. -   Inflorescence:     -   -   Size.—grows to 3 cm wide and 12 cm long.         -   Type.—raceme.         -   Number of flowers per raceme.—about 40.         -   Number of raceme.—7.         -   Peduncle.—grows to 27 cm tall, 2 mm wide at base, Greyed             Orange 176B, glandular hairs.         -   Pedicel.—variable, with glandular hairs, Greyed Orange 176B.         -   Bloom period.—May with sporadic rebloom in Canby, Oreg. -   Flower bud:     -   -   Size.—2 mm wide and 3 mm long.         -   Description.—glandular puberulent, ovoid.         -   Color.—Yellow 11D. -   Flower:     -   -   Type.—imperfect.         -   Shape.—campanulate.         -   Size.—5 mm deep and 10 mm wide.         -   Petal description.—5 in number, lanceolate, 5 mm long and             1.5 mm wide, slightly reflexed, tip acuminate, base             attenuate, margin entire, glabrous on both sides, White             NN155D on both sides.         -   Calyx description.—5 mm deep and 5 mm wide, with 5 lobes,             divided ¾ way to the base, campanulate, glandular hairs on             outside, glabrous inside, tip obtuse, margin entire, NN155D             on both sides.         -   Stamen description.—10 in number, 2 mm long, White NN155D             overall, no pollen.         -   Pistil description.—one central two beaked pistil, 4.5 mm             long and 2 mm wide, White NN155D.         -   Fragrance.—none.         -   Lastingness.—each raceme blooms for about 2 weeks on the             plant. -   Fruit and seed: none -   Disease and pest tolerance: The new cultivar is typical to the     genus. No known resistances to pests or diseases. No problems have     been found in Canby, Oreg. 

I claim:
 1. A new and distinct Heucherella plant as herein illustrated and described. 